diff --git a/amazon_transcribe.go b/amazon_transcribe.go
index e537875..0b0e4da 100644
--- a/amazon_transcribe.go
+++ b/amazon_transcribe.go
@@ -11,58 +11,6 @@ import (
 	"github.com/aws/aws-sdk-go/service/transcribestreamingservice"
 )
 
-const (
-	AccessDeniedException       = "AccessDeniedException"
-	IncompleteSignature         = "IncompleteSignature"
-	InternalFailure             = "InternalFailure"
-	InvalidAction               = "InvalidAction"
-	InvalidClientTokenID        = "InvalidClientTokenId"
-	InvalidParameterCombination = "InvalidParameterCombination"
-	InvalidParameterValue       = "InvalidParameterValue"
-	InvalidQueryParameter       = "InvalidQueryParameter"
-	MalformedQueryString        = "MalformedQueryString"
-	MissingAction               = "MissingAction"
-	MissingAuthenticationToken  = "MissingAuthenticationToken"
-	MissingParameter            = "MissingParameter"
-	NotAuthorized               = "NotAuthorized"
-	OptInRequired               = "OptInRequired"
-	RequestExpired              = "RequestExpired"
-	ServiceUnavailable          = "ServiceUnavailable"
-	ThrottlingException         = "ThrottlingException"
-	ValidationError             = "ValidationError"
-)
-
-var (
-	amazonErrors = map[string]int{
-		// https://docs.aws.amazon.com/transcribe/latest/APIReference/API_streaming_StartStreamTranscription.html#API_streaming_StartStreamTranscription_Errors
-		transcribestreamingservice.ErrCodeLimitExceededException:      429,
-		transcribestreamingservice.ErrCodeConflictException:           409,
-		transcribestreamingservice.ErrCodeBadRequestException:         400,
-		transcribestreamingservice.ErrCodeInternalFailureException:    500,
-		transcribestreamingservice.ErrCodeServiceUnavailableException: 503,
-
-		// https://docs.aws.amazon.com/transcribe/latest/APIReference/CommonErrors.html
-		AccessDeniedException:       400,
-		IncompleteSignature:         400,
-		InternalFailure:             500,
-		InvalidAction:               400,
-		InvalidClientTokenID:        403,
-		InvalidParameterCombination: 400,
-		InvalidParameterValue:       400,
-		InvalidQueryParameter:       400,
-		MalformedQueryString:        404,
-		MissingAction:               400,
-		MissingAuthenticationToken:  403,
-		MissingParameter:            400,
-		NotAuthorized:               400,
-		OptInRequired:               403,
-		RequestExpired:              400,
-		ServiceUnavailable:          503,
-		ThrottlingException:         400,
-		ValidationError:             400,
-	}
-)
-
 type AmazonTranscribe struct {
 	LanguageCode                      string
 	MediaEncoding                     string
@@ -148,14 +96,12 @@ func (at *AmazonTranscribe) Start(ctx context.Context, r io.Reader) (*transcribe
 
 	resp, err := client.StartStreamTranscriptionWithContext(ctx, &input)
 	if err != nil {
-		if awsErr, ok := err.(awserr.Error); ok {
-			code, ok := amazonErrors[awsErr.Code()]
-			if !ok {
-				return nil, err
-			}
+		if reqErr, ok := err.(awserr.RequestFailure); ok {
+			code := reqErr.StatusCode()
+			message := reqErr.Message()
 			return nil, &SuzuError{
 				Code:    code,
-				Message: awsErr.Message(),
+				Message: message,
 			}
 		}
 		return nil, err